Along_the_Wire according to the ONS the average public sector earnings premium was 7% in 2019 and has declined from 10% at the start of the last decade.
I’m glad that gap is shrinking rather than growing but to be honest I don’t have a massive problem with there being a smallish premium as long as it’s contained and I think it’s unavoidable to some extent. I’d be more concerned about trying to figure out how to reduce waste and expenditure on inefficient or non-essential shite so that more money could be spent on improving educational standards or boosting the take-home pay of people grafting 60hr weeks on minimum wage. Osbourne’s living wage reform in the 2015 budget was one of the truly great political reforms of recent times and very few people give him or his party any credit for that.